slayer battery opinions

zippys since i had good results from them and fit the budget.
mostliky the 5k flightmax in either 25c or 30c.

We'll I got the car together and am using a 2s 4000 protek lipo I already had. The car is pretty fun and temps are all quite low...just lightly warm to the touch. Speed is not bad with just a 2 cell...30-35ish I guess chasing cars down the street.
Now I need to find some affordable 3s lipos...